hello the "SA" hallmark is for the area in Italy it was made "SA" 925 Italy means it is sterling silver made in Salerno , Italy, The heart or butterfly or unicorn or any other symbol is the designers mark. Hope that helps .
I found a pair of earrings and they also have an SA inside a heart. I was trying to figure out what the SA meant. I see people say that means it was made in Italy, but my earrings say China. They are marked 925. So, I am confused. Any thoughts?